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DEPTH TH52
3 Mounting Location
3.1 Acoustic Noise
Acoustic noise is always present and these sound waves can interfere with the
operation of the transducer. Background noise from sources such as: waves, fish, and
other vessels cannot be controlled. However, carefully selecting the transducer
mounting location can minimize the affect of vessel generated noise from the
propeller(s) and shaft(s), other machinery, and other echosounders. The lower the
noise level, the higher the echosounder gain that can be used.
3.2 Placement
Choose a location where:
• The water flowing across the hull is smoothest with a minimum of bubbles and
turbulence (especially at high speeds).
• The transducer will be continuously immersed in water.
• The transducer beam is unobstructed by the keel or propeller shaft(s).
• There is a minimum deadrise angle.
• There is adequate headroom inside the vessel for the height of the housing,
tightening the nuts, and removing any insert (see table below).
Model
Minimum
Headroom
Outside Hull
Hole Saw Size
Inside Hull
Hole Saw Size
P17, Retractable 200mm (8”) 51mm (2”) 60mm (2-3/8”)
Caution: Do not mount the sensor:
Near water intake or discharge openings, Behind strakes, fittings,
or hull irregularities, Behind eroding paint (an indication of
turbulence)
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